Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment
Property, plant and equipment, gross	$ 12,755,422	$ 12,603,880
Less: accumulated depreciation and amortization	(9,924,465)	(9,705,152)
Property, Plant and Equipment, Net	2,830,957	2,898,728	$ 3,026,100
Depreciation expense	632,900	644,900	663,100
Repair and maintenance expense	199,200	228,200	$ 202,500
Land
Property, Plant and Equipment
Property, plant and equipment, gross	31,529	32,074
Buildings
Property, Plant and Equipment
Property, plant and equipment, gross	158,518	140,330
Drilling rigs and related equipment
Property, Plant and Equipment
Property, plant and equipment, gross	12,084,276	11,959,989
Oilfield hauling and mobile equipment
Property, Plant and Equipment
Property, plant and equipment, gross	228,730	233,920
Other machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 252,369	$ 237,567